1. Progress on the Prototype design Catania Goikoetxea, Mikel Navarro Medrano, Javier Mainz, March 31st, 2011 1

2. Previous prototype 2 16 Crystals separated in 4 groups, inserted in each of the alveole quarters CF Alveole PWO Crystals Al Insert 2 preamplifiers per Crystal Capsules with 2 APD per Crystal L Frames to support Capsules. Glued to the Crystal Grease between APD and Crystal

3. Drawbacks APDs Capsules redesign Frames redesign Preamplifiers configuration 3

4. New design criteria APDs: together and centered? – Test of configuration (together or not together) Preamplifiers configuration: as close as possible due space limitations – Insert thickness 4

5. Capsules Compactness around APDs: gives more gluing surface between Crystal and Frame. 5 Inserted from sides Gluing surface Active area

6. Patch Panel Removes wiring between APDs and Preamplifiers. Mounted on Capsules. 2 types of Patch Panels. 6 Assembly 1.Patch panel insertion 2.APD insertion guided by pins 3.Pins welding?

7. Preamplifiers New stacking method: one opposite to the other. Grouped over a single Tray (16 per Tray).º 7 Connectors for pins Spacers between Preamplifiers and Tray

8. Preamplifiers Positioning. 8

9. Frame Group of 4 Crystals/Capsules. Groove for spare glue. 9 0.3 mm groove New design

10. Mounting group 10 4 Crystals 1 Frame 4 APD Capsule groups To be assembled in each Alveole quarter hole

11. Frame - Materials PEEK: expensive? ABS: properties? Aluminium: – Better for thermal behaviour – Electric point of view? – Possible to glue? 11

12. Alveoles 10 mm of gluing surface. Front covered. Frames separated by middle cross? 12 10 mm of gluing surface Middle cross Holes for Optic Fibers in the front

13. Aluminium Insert Thickness of 5-6 mm. 0.1 mm from Alveoles for gluing Possibility of assembly guides Grooves for Trays 13 6 mm thick 5 mm thick

14. Future tasks Material analysis. Load analysis of Insert and Alveoles. Thermal analysis. – Test different ideas for cooling Vertical and horizontal load analysis. Mounting plates, Supports… Continue with the design Assembly procedure 14

15. Questions? 15